And DPF technology is the mainstream technology of tail gas after-treatment technology for light vehicle, the failure diagnosis of DPF is the key point of OBD system in the entire DPF technology.
而D PF技术，作为轻型车尾气后处理技术的主流技术，对DPF的失效诊断，是整个DPF技术obd系统中的关键点。
A plastic fluid flow director for a water treatment system is provided having a plastic substrate with a protective coating that is substantially opaque to UV light.
提供了一种具有塑料基底的用于水处理系统的流体流动引导器，该塑料基底具有大体上对UV光不透光的保护涂层。
Due to the indication light and treatment light is the same beam, the design of optical system becomes simplified.
由于采用了指示光和治疗光为同一光束的思想，使定位更加准确。
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